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Relevant bibliographies by topics / Cell membrane stability

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Academic literature on the topic 'Cell membrane stability'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "Cell membrane stability"

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Chasis, J. A., and N. Mohandas. "Erythrocyte membrane deformability and stability: two distinct membrane properties that are independently regulated by skeletal protein associations." Journal of Cell Biology 103, no. 2 (1986): 343–50. http://dx.doi.org/10.1083/jcb.103.2.343.

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Skeletal proteins play an important role in determining erythrocyte membrane biophysical properties. To study whether membrane deformability and stability are regulated by the same or different skeletal protein interactions, we measured these two properties, by means of ektacytometry, in biochemically perturbed normal membranes and in membranes from individuals with known erythrocyte abnormalities. Treatment with 2,3-diphosphoglycerate resulted in membranes with decreased deformability and decreased stability, whereas treatment with diamide produced decreased deformability but increased stabil

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Kink, Julian, Martin Ise, Michel Suermann, Boris Bensmann, Philipp Junker, and Richard Hanke-Rauschenbach. "Mechanical Stability of Membranes in PEMWE." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2953. https://doi.org/10.1149/ma2024-02432953mtgabs.

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This study investigates the structural mechanics of membranes in proton exchange membrane water electrolysis (PEMWE) cells, with a particular focus on mechanical stressors and the resultant membrane deformation. Membrane defects such as cracks, pinholes, and thinning can occur due to mechanical stressors. Structural mechanical simulations can predict the membrane behaviour under stress if the boundary conditions are set accurately and the material models are chosen to fit experimental data. This presentation describes such model-based investigations and is divided into three parts. It begins w

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Sari, Diah Indah Kumala, Tristiana Erawati, Andang Miatmoko, Cita Rosita Sigit Prakoeswa, and Widji Soeratri. "Characterization and Stability Study of Amniotic Membrane Stem Cell Metabolite Product (AMSC-MP)." International Journal of Pharma Research and Health Sciences 8, no. 1 (2020): 3126–30. http://dx.doi.org/10.21276/ijprhs.2020.01.02.

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Bandurska, Hanna, and Halina Gniazdowska-Skoczek. "Cell membrane stability in two barley genotypes under water stress conditions." Acta Societatis Botanicorum Poloniae 64, no. 1 (2014): 29–32. http://dx.doi.org/10.5586/asbp.1995.005.

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The effect of water stress induced in vitro by polyethylene glycol 6000 (PEG) and under drought stress on cell membrane stability was examined in two barley genotypes, the cultivar Aramir and line R567. The injury of cell membranes was markely influenced by leaf age, leaf position on the stem, and the degree of drought stress. The differences in percentage of injury to cell membrane between these genotypes were also found. The cv. Aramir exhibited a lower percentage injury value as compared to line R567, measured in vitro by PEG test. Similarly, under drought stress the cv. Aramir showed highe

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Messmann, R., S. Gannon, S. Sarnaik, and RM Johnson. "Mechanical properties of sickle cell membranes." Blood 75, no. 8 (1990): 1711–17. http://dx.doi.org/10.1182/blood.v75.8.1711.1711.

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Abstract The mechanical properties of sickle erythrocyte membranes were evaluated in the ektacytometer. When ghosts from the total red blood cell population were examined, the rigidity of the resealed ghosts and their rate of fragmentation by shear stress (t1/2) were normal. However, fractionation on Stractan density gradients revealed that sickle cells were heterogenous in their membrane mechanical properties. The ghosts from dense cell fractions exhibited both increased rigidity and decreased stability. Presumably, these altered mechanical properties are a reflection of the well-documented b

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Messmann, R., S. Gannon, S. Sarnaik, and RM Johnson. "Mechanical properties of sickle cell membranes." Blood 75, no. 8 (1990): 1711–17. http://dx.doi.org/10.1182/blood.v75.8.1711.bloodjournal7581711.

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The mechanical properties of sickle erythrocyte membranes were evaluated in the ektacytometer. When ghosts from the total red blood cell population were examined, the rigidity of the resealed ghosts and their rate of fragmentation by shear stress (t1/2) were normal. However, fractionation on Stractan density gradients revealed that sickle cells were heterogenous in their membrane mechanical properties. The ghosts from dense cell fractions exhibited both increased rigidity and decreased stability. Presumably, these altered mechanical properties are a reflection of the well-documented biochemica

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Park, Heemin, Youngkwang Kim, Yu Seung Kim, and Chulsung Bae. "Phosphoric Acid-Doped Ion-Pair High-Temperature Proton Exchange Membranes Based on Polyphenylene Copolymer." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2932. https://doi.org/10.1149/ma2024-02432932mtgabs.

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High-temperature proton exchange membrane fuel cell (HT-PEMFC) using hydrogen fuel has multiple advantages, such as faster reaction kinetics, high impurity tolerance to the catalyst, and simple water and thermal management than low-temperature proton exchange membrane fuel cell (LT-PEMFC). Polybenzimidazole (PBI) based phosphoric acid (PA)-doped membranes are the most common membrane for HT-PEMFC, because they have excellent chemical and thermal stability, and provide relatively usable conductivity for HT-PEMFCs. However, the PBI-based PA-doped membranes still suffer from reduction in conducti

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Toda, Shota, Artin Fattah, Kenta Asawa, et al. "Optimization of Islet Microencapsulation with Thin Polymer Membranes for Long-Term Stability." Micromachines 10, no. 11 (2019): 755. http://dx.doi.org/10.3390/mi10110755.

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Microencapsulation of islets can protect against immune reactions from the host immune system after transplantation. However, sufficient numbers of islets cannot be transplanted due to the increase of the size and total volume. Therefore, thin and stable polymer membranes are required for the microencapsulation. Here, we undertook the cell microencapsulation using poly(ethylene glycol)-conjugated phospholipid (PEG-lipid) and layer-by-layer membrane of multiple-arm PEG. In order to examine the membrane stability, we used different molecular weights of 4-arm PEG (10k, 20k and 40k)-Mal to examine

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Manohar, Murli, and Dukjoon Kim. "Synergistic Effect of 2-Acrylamido-2-methyl-1-propanesulfonic Acid on the Enhanced Conductivity for Fuel Cell at Low Temperature." Membranes 10, no. 12 (2020): 426. http://dx.doi.org/10.3390/membranes10120426.

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This present work focused on the aromatic polymer (poly (1,4-phenylene ether-ether-sulfone); SPEES) interconnected/ cross-linked with the aliphatic monomer (2-acrylamido-2-methyl-1-propanesulfonic; AMPS) with the sulfonic group to enhance the conductivity and make it flexible with aliphatic chain of AMPS. Surprisingly, it produced higher conductivity than that of other reported work after the chemical stability was measured. It allows optimizing the synthesis of polymer electrolyte membranes with tailor-made combinations of conductivity and stability. Membrane structure is characterized by 1H

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Wijaya, Farid, Seunghee Woo, Suyeon Kim, et al. "Sulfonated Polyphenylene-Based Multiblock Membranes with Fluorine Moiety for Fuel Cell Applications." International Journal of Energy Research 2023 (June 19, 2023): 1–13. http://dx.doi.org/10.1155/2023/5562126.

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Sulfonated poly(phenylene-co-arylene ether sulfone) multiblock copolymers are synthesized via Colon’s nickel-mediated cross-coupling reaction and are investigated as a proton-exchange membrane fuel cell. To investigate the influence of the fluorine moieties on the membrane properties, two different membranes are prepared, one containing a fluorinated hydrophobic poly(arylene ether) block (6F polymer membrane) and a nonfluorinated biphenyl (BP) polymer membrane. The proton transport, morphology, mechanical properties, and oxidative stabilities of the membranes are examined in relation to the io

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Dissertations / Theses on the topic "Cell membrane stability"

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Hartsel, Scott Clifton. "Effect of membrane supramolecular structure on the photoresponse and structural stability of bacteriorhodopsin /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487260531954914.

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Park, Doh-Yeon. "Anion-conductive multiblock aromatic copolymer membranes: structure-property relationships." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52172.

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Anion exchange membrane fuel cells (AEMFCs) are an alternative to proton exchange membrane fuel cells (PEMFCs) with potential benefits that include low cost (i.e., platinum-free), facile electro-kinetics, low fuel crossover, and use of CO-resistant metal catalysts. Despite these advantages, AEMFCs have not been widely used because they require more highly conductive anion exchange membranes (AEMs) that do not exhibit impaired physical properties. Therefore, the issues that this research is dealing with are to maximize conductivity and to improve chemical stability. As model materials for these

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Osborn, Angela Michelle. "Investigation of Phase Morphology and Blend Stability in Ionomeric Perfluorocyclobutane (PFCB)/Poly(vinylidene difluoride) (PVDF) Copolymer Blend Membranes." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77265.

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This research is focused on the investigation of phase morphology and blend stability within ionomeric perfluorocyclobutane (PFCB)/poly(vinylidene difluoride) (PVDF) copolymer blend membranes. The morphologies of these unique materials, designed as proton exchange membranes (PEMs) for proton exchange membrane fuel cells (PEMFCs), have been examined not only in the as-cast/as-received state, but also as a function of exposure to various ex-situ aging environments. The morphological investigations used to probe the response of these ionomer blends have been designed to mimic the environment with

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Shah, Siddharth Prakashchandra. "LIPID COMPOSITIONS OF MICROBIAL ORGANISMS ISOLATED FROM EXTREME ENVIRONMENTS AND THEIR IMPLICATION IN THERMO STABILITY OF BACTERIAL CELL MEMBRANE STRUCTURE." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/419298.

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Chemistry<br>Ph.D.<br>Microorganisms with an ability to thrive in harsh environments are referred as “extremophiles”. With advances in biotechnology, interest has grown in the extremophile research because of their unique macromolecules’ characteristics due to their growth environments. Over last decade, researchers have isolated many extremophiles from environments like volcano, salt lakes, hydrothermal vents, deep oceans, Antarctica glaciers etc. Macromolecules of these extremophiles are responsible for their survival in extreme environments. In this research work we have isolated lipid mole

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Bandlamudi, Vamsikrishna. "The effect of flow field design on the degradation mechanisms and long term stability of HT-PEM fuel cell." University of the Western Cape, 2018. http://hdl.handle.net/11394/6752.

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Philosophiae Doctor - PhD<br>Fuel cells are long term solution for global energy needs. In current fuel cell technologies, Proton Exchange Membrane (PEM) fuel cells are known for quick start-up and ease of operation compared to other types of fuel cells. Operating PEM fuel cells at high temperature show promising applications for stationary combined heat and power application (CHP). The high operating temperature up to 160°C allows waste heat to be recovered for co-generation or tri-generation purposes. The commercially available PEM fuel cells operating at 160⁰C can tolerate up to 3% CO

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Woo, Sahng Hyuck. "Membranes composites acide perfluorosulfonique (PFSA)/argile pour un fonctionnement à faible humidité relative et haute température des piles à combustible à membrane échangeuse de protons (PEMFC)." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEM033.

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Cette thèse introduit de nouvelles membranes électrolytiques pouvant fonctionner à faible humidité relative (inférieure à 50%) et à une température intermédiaire, c'est-à-dire 90°C voire au-delà. Plus spécifiquement, la thèse tire profit de l'hygroscopicité de la morphologie d’argiles naturelles, lasépiolite microfibreuse et l’halloysite tubulaire . Ces nanoargiles ont été intégrées à des suspensions de Nafion® ou Aquivion pour préparer des membranes composites. Elles ont été fonctionnalisées et prétraitées pour les rendre conductrices protoniques et améliorer leur compatibilité avec les matri

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Galera, Laporta Letícia 1985. "Dynamical aspects of the regulation of bacterial proliferation." Doctoral thesis, Universitat Pompeu Fabra, 2019. http://hdl.handle.net/10803/666296.

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Bacterial proliferation has been studied for more than 100 years, but our knowledge of the mechanisms that control its dynamical aspects is still very limited. In this Thesis we have studied, at both singlecell and population levels, different aspects of the main regulators of bacterial proliferation, namely the cell cycle, biomass production and membrane stability. Our goal has been to shed light on how perturbation of these regulators affects their dynamical responses in a variety of situations. Specifically, we show that the periodic doubling of genes through the bacterial cell cycl

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Baradie, Bilal. "Membranes ionomères composites pour piles à combustibles H2/O2 : élaboration et caractérisation." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0002.

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Dans le but de fournir une alternative aux membranes perfluorees pour piles a combustible a electrolyte polymere, plusieurs membranes polymeres a conduction protonique ont ete elaborees et caracterisees leurs proprietes electrochimiques et physiques, notamment leur stabilite mecanique et thermique, ont ete etudiees. La premiere famille de membranes est obtenue, par dispersion d'une poudre inorganique superconductrice protonique (h#3sb#3p#2o#1#4,xh#2o, = 10#-#2s. Cm#-#1) dans une matrice polymere commerciale epdm. Malgre leurs conductivites assez elevees, ces membranes composites ne repondent p

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Appelqvist, Hanna. "Lysosomal Membrande Stability and Cathepsins in Cell Death." Doctoral thesis, Linköpings universitet, Experimentell patologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-85008.

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Lysosomes are acidic organelles that are critically involved in a number of physiological processes, including macromolecule degradation, endocytosis, autophagy, exocytosis and cholesterol homeostasis. Several pathological conditions, such as cancer, neurodegenerative disorders and lysosomal storage diseases, involve lysosomal disturbances, indicating the importance of the organelle for correct cellular function. The aim of this thesis was to investigate the role of lysosomes in cell death signaling. Previous studies have shown that permeabilization of the lysosomal membrane and release of hyd

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Heyes, Colin D. "Effects of pH, cations and lipids on the structure, stability and function of bacteriorhodopsin." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/30754.

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Books on the topic "Cell membrane stability"

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Cold Spring Harbor Symposia on Quantitative Biology: Protein Kinesis : The Dynamics of Protein Trafficking and Stability (Cold Spring Harbor Symposia on Quantitative Biology). Cold Spring Harbor Laboratory Press, 1996.

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Book chapters on the topic "Cell membrane stability"

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White, Stephen H., Gunnar von Heijne, and Donald M. Engelman. "Membrane Protein Folding and Stability." In Cell Boundaries. Garland Science, 2021. http://dx.doi.org/10.1201/9780429341328-5.

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Hayashi, Yoshihiko, Kei Kaida, Kazunari Igawa, Shizuka Yamada, Takeshi Ikeda, and Kajiro Yanagiguchi. "d-Glucosamine contributes to cell membrane stability." In Marine Glycobiology. CRC Press, 2016. http://dx.doi.org/10.1201/9781315371399-33.

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Cruz, P. E., M. Carmo, A. S. Coroadinha, et al. "Retroviral Vector Stability: Inactivation Kinetics and Membrane Properties." In Animal Cell Technology Meets Genomics. Springer Netherlands, 2005. http://dx.doi.org/10.1007/1-4020-3103-3_60.

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Bamgbose, Felicia, and Pranev Sharma. "Magnesium and Cell Membrane Stability in the Critically Ill Patient." In Key Topics in Management of the Critically Ill. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-22377-3_13.

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Liu, Jing, and Tong Zhang. "Design of Membrane Electrode Assembly with Non-precious Metal Catalyst for Self-humidifying Proton Exchange Membrane Fuel Cell." In Proceedings of the 10th Hydrogen Technology Convention, Volume 1. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8631-6_39.

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AbstractHigh cost is one of the key factors restricting the industrialization and commercialization of proton exchange membrane fuel cells (PEMFCs). In this paper, a low-cost membrane electrode assembly (MEA) is prepared by using a self-made non-precious metal catalyst. Through the polarization curve test of fuel cell, the optimal loading of Fe-N-S-C catalyst and the optimal ratio with Nafion ionomer are studied. When the loading of Fe-N-S-C catalyst is 2.0 mg cm−2 and the ratio of Nafion ionomer to Fe-N-S-C catalyst is 3:7, the performance of the PEMFC is the best. The performance of MEA unde

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Hayashi, Yoshihiko. "The Contribution of D-Glucosamine to Cell Membrane Stability: Mechanisms and Applications in Regenerative Medicine." In Sustainable Agriculture Reviews 35. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16538-3_7.

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Danilczuk, Marek, and Shulamith Schlick. "Ranking the Stability of Perfluorinated Membranes to Attack by Hydroxyl Radicals." In The Chemistry of Membranes Used in Fuel Cells. John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119196082.ch3.

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Ye, Yuesheng, and Yossef A. Elabd. "Chemical Stability of Anion Exchange Membranes for Alkaline Fuel Cells." In Polymers for Energy Storage and Delivery: Polyelectrolytes for Batteries and Fuel Cells. American Chemical Society, 2012. http://dx.doi.org/10.1021/bk-2012-1096.ch014.

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Ellett, A., D. Schlehuber, L. Singheiser, and T. Markus. "Permeation and Stability Investigation of Ba0,5Sr0,5Co0,8Fe0,2O3-σ Membranes for Oxy-Fuel Processes." In Advances in Solid Oxide Fuel Cells V. John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470584316.ch11.

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Woodcock, Thomas. "Fluid Physiology Part 1: Volume and Distribution of Water and Its Major Solutes Between Plasma, the Interstitium and Intracellular Fluid." In Rational Use of Intravenous Fluids in Critically Ill Patients. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-42205-8_2.

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AbstractThis chapter focuses on the compartmentalization of body water and its solutes, which is essential for understanding the physiology of body fluid spaces. The modern view of body fluid circulation is an actively pumped double circulation of extracellular fluid that enables solutes to be transferred to and from the intracellular fluid. The different factors that determine fluid flux across cell membrane and microvascular permeability barriers will be discussed, including hydrostatic pressure differences and solute concentration gradients. The regulation of total body water volume and bod

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Conference papers on the topic "Cell membrane stability"

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Yin, Jun, and Yong Huang. "Investigation of Process-Induced Cell Membrane Stability Using Molecular Dynamics Simulation." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84374.

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Manufacturing process-induced damage to cells is of significant importance in biomaterial direct writing. For safe and reproducible cell direct writing, the process-induced cell damage must be understood in addition to biological property research. The objective of this study is to investigate the cell membrane stability under the external normal pressure. It is performed by studying the dipalmitoylphosphatidylcholine (DPPC) bilayer behavior under different normal pressures using molecular dynamics (MD). It is found that as the normal pressure increases, the thickness of DPPC bilayer decreases

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Luo, Hongze, Guntars Vaivars, Mkhulu Mathe, Shakes Nonjola, and Mark Rohwer. "Proton Conducting Membrane Prepared by Cross-Linking Highly Sulfonated Peek for PEMFC Application." In ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2009. http://dx.doi.org/10.1115/fuelcell2009-85205.

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The proton conducting membrane was prepared by cross-linking highly sulfonated and sulfinated poly(etheretherketone) (SsPEEK). The cross-linked membrane is low cost due to its use of non-expensive chemical and simple production procedure. The membrane exhibited high proton conductivity (0.04 S/cm at 60 °C), extremely reduced water uptake, enhanced strength and stability compared with that of non-cross-linked membrane. These results suggested that the cross-linked PEEK membrane is a suitable candidate of proton conducting membranes for polymer electrolyte membrane fuel cell (PEMFC) applications

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Vasanthakumari, R. "Design and Development of Thermoplastic Polyurethane Based Composite Membranes." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33050.

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Polymer electrolyte membranes used in fuel cells are proton selective and hence allows only protons to pass through it. The electrolyte composition, morphology and water absorption properties of the membrane greatly influence the performance of the fuel cell. For example the membranes used in fuel cells should meet following requirements. • Good thermal stability above 250°C. • Proton conductivity greater than 10^-2 S/cm. • Good water absorption and water retaining capacity. • mechanical strength and flexibility. The present paper is focused on design and development of a membrane suitable for

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Boyles, J. K., JE B. Fox, and M. C. Berndt. "THE DISTRIBUTION OF GP lb AND THE STABILITY OF THE PLASMA MEMBRANE ARE DEPENDENT UPON AN INTACT MEMBRANE SKELETON." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643626.

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Platelets are know to have a cytoskeleton of actin filaments. We have presented evidence that they also have a membrane skeleton linked to the cytoskeletal filaments and that the membrane skeleton is linked to GP Ib-IX on the plasma membrane via actin-binding protein. In the current study, electron microscopy of thick (0.2 ym) epoxy sections was used to identify the distribution of GP lb. After various treatments, platelets were fixed and incubated with affinity-purified GP lb antibody and colloidal gold-labeled Protein-A. The entire cell surface was covered with a network of short intersectin

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Lee, Chi-Hung, Jia-Ru Chen, Hung-Wei Shiu, et al. "Effect of Bridging Groups on Sulfonated Poly(Imide-Siloxane) for Application in Proton Exchange Membrane of Fuel Cells." In ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/fuelcell2008-65155.

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A series of six-membered sulfonated poly(imide-siloxane)s were synthesized using 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTDA), aminopropyl-terminated polydimethylsiloxane (PDMS) 2,2-benzidinedisulfonic acid (BDSA), as the sulfonation target diamine groups, and various non-sulfonated diamine monomers behaving as bridging groups. The structure-property relationship of SPI-SXx membranes is discussed in details according to the chemical structure of the nvarious non-sulfonated diamines of SPI-SXx membranes from the viewpoints of proton conductivity, ion exchange capacity (IEC) and membran

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Fan, Chinbay, Michael Onischak, and William Liss. "Advanced Components for PEMFC Stacks." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97144.

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Currently, fuel cell cost reduction and long life are major priorities for fuel cells to be commercially successful for vehicle, stationary, or portable power applications. In the last five years, Gas Technology Institute (GTI) has formulated and developed a low cost, long lifetime, high conductivity proton exchange membrane (PEM) yielding state-of-the-art fuel cell performance. Additionally, a non-coated, corrosion-resistant metal alloy bipolar separator plate has been patented and tested for both hydrogen-fueled and direct methanol fueled PEMFC applications. Tests in fuel cells plus out-of-c

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Radisavljevic-Gajic, Verica, and Kyle Graham. "Steady-State System Analysis of a Proton Exchange Membrane Fuel Cell Nonlinear Mathematical Model." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5388.

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In this paper we analyze the steady state dynamic behavior of a nonlinear model of a Proton Exchange Membrane (PEM) fuel cell. This model is used in several theoretical studies and application papers of PEM fuel cells. We indicate limitations and discuss potential constraints of this mathematical model. We establish conditions for the asymptotic stability at steady state by using the first stability method of Lyapunov. We find that the linearized model at steady state is uncontrollable. Specifically, the state variable corresponding to the hydrogen pressure is not controllable. This means that

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Jou, Bo-Shian, Fang-Bor Weng, Pei-Hung Chi, Ay Su, Chun-Ying Hsu, and Shih-Hung Chan. "Dependence of Gas Stoichiometry on the Uniformity and Stability of a Segmented Proton Exchange Membrane Fuel Cell." In ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2009. http://dx.doi.org/10.1115/fuelcell2009-85009.

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This study developed an eight-segmented fuel cell for investigating local current distribution and stability along channel with six-pass serpentine flow field. The stoichiometry of anode was 1.2 and cathode was 4 as the benchmark for comparison. When the stoichiometry flow rate of cathode was 4 and anode decreased to 1.05, which caused the hydrogen starvation on the downstream. The decrease of cathode stoichiometry from 4 to 2 resulted in less water diffusing to membrane and slight decrease of the conductivity on the gas-inlet segment. The cathode stoichiometry of 1.2 showed better performance

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CIULCA, Sorin. "THE ASSESSMENT OF CELL MEMBRANE STABILITY AS AN INDICATOR OF DROUGHT TOLERANCE IN WHEAT." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/61/s25.143.

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Tanaka, Nobuyuki, Tetsuya Yamaki, Masaharu Asano, Yasunari Maekawas, Kaoru Onuki, and Ryutaro Hino. "Stability of Radiation Grafted Membranes in Electro-Electrodialysis of HIX Solution." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29359.

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Japan Atomic Energy Agency has been conducting research and development on a thermochemical water-splitting cycle featuring iodine- and sulfur-compounds (called an IS process) as one of promising heat utilization systems of High Temperature Gas-Cooled Reactors. We have prepared polymer electrolyte membranes by the radiation-induced graft polymerization and cross-linking methods and then have investigated their applicability to electro-electrodialysis (EED) for concentrating HI in an HI-I2-H2O mixture. For practical applications, EED membranes are required to be stable in the severe environment

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Reports on the topic "Cell membrane stability"

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Phisalaphong, Muenduen. Development of cell carrier for improved productivity of continuous ethanol fermentation by Saccharomyces cerevisiae. Chulalongkorn University, 2010. https://doi.org/10.58837/chula.res.2010.51.

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The production of a renewable energy from biomass, such as ethanol by fermentation, has received special attention as a consequence of the world energy crisis. Nowadays, gasohol E-10, a mixture of 10% ethanol and 90% gasoline has been widely used in vehicles in Thailand and there is an attempt to promote the use of E-20 or E-85 in the vehicles in the near future. Ethanol fermentation by conventional batch suffers from various constrains such as, low cell density and rather time consuming. Although continuous fermentation by suspended cell culture can be used to speed up the process, it is more

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Barefoot, Susan, Benjamin Juven, Thomas Hughes, et al. Characterization of Bacteriocins Produced by Food Bioprocessing Propionobacteria. United States Department of Agriculture, 1992. http://dx.doi.org/10.32747/1992.7561061.bard.

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Objectives were to further characterize activity spectra of dairy propionibacteria bacteriocins, jenseniin G and propionicin PLG-1, purify them, examine the role of cell walls in resistance, examine their interactions with cytoplasmic membrane, explain producer immunity, and clone the responsible genes. Inhibitory spectra of both bacteriocins were further characterized. Propionicin was most effective in controlling Gram-positive, rather than Gram-negative organisms; it controlled growth of sensitive cells both in a culture medium and a model food system. Jenseniin inhibited yogurt cultures and

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Manulis-Sasson, Shulamit, Christine D. Smart, Isaac Barash, Laura Chalupowicz, Guido Sessa, and Thomas J. Burr. Clavibacter michiganensis subsp. michiganensis-tomato interactions: expression and function of virulence factors, plant defense responses and pathogen movement. United States Department of Agriculture, 2015. http://dx.doi.org/10.32747/2015.7594405.bard.

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Clavibactermichiganensissubsp. michiganensis(Cmm), the causal agent of bacterial wilt and canker of tomato, is the most destructive bacterial disease of tomato causing substantial economic losses in Israel, the U.S.A. and worldwide. The goal of the project was to unravel the molecular strategies that allow Cmm, a Gram-positive bacterium, to develop a successful infection in tomato. The genome of Cmm contains numerous genes encoding for extracellular serine proteases and cell wall degrading enzymes. The first objective was to elucidate the role of secreted serine proteases in Cmm virulence. Mut

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Altstein, Miriam, and Ronald J. Nachman. Rational Design of Insect Control Agent Prototypes Based on Pyrokinin/PBAN Neuropeptide Antagonists. United States Department of Agriculture, 2013. http://dx.doi.org/10.32747/2013.7593398.bard.

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The general objective of this study was to develop rationally designed mimetic antagonists (and agonists) of the PK/PBAN Np class with enhanced bio-stability and bioavailability as prototypes for effective and environmentally friendly pest insect management agents. The PK/PBAN family is a multifunctional group of Nps that mediates key functions in insects (sex pheromone biosynthesis, cuticular melanization, myotropic activity, diapause and pupal development) and is, therefore, of high scientific and applied interest. The objectives of the current study were: (i) to identify an antagonist bioph

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Blum, Abraham, Henry T. Nguyen, and N. Y. Klueva. The Genetics of Heat Shock Proteins in Wheat in Relation to Heat Tolerance and Yield. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568105.bard.

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Fifty six diverse spring wheat cultivars were evaluated for genetic variation and heritability for thermotolerance in terms of cell-membrane stability (CMS) and triphenyl tetrazolium chloride (TTC) reduction. The most divergent cultivars for thermotolerance (Danbata-tolerant and Nacozari-susceptible) were crossed to develop an F8 random onbred line (RIL) population. This population was evaluated for co-segragation in CMS, yield under heat stress and HSP accumulation. Further studies of thermotolerance in relations to HSP and the expression of heterosis for growth under heat stress were perform

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